Perhaps 750,000 deaths every year.

[jaF0]

745,000 deaths a year can be linked to long working weeks of 55 hours or more, a WHO study suggests

Working 55 hours or more a week was linked to a 35% increase in strokes and a 17% increase in deadly heart disease, according to the WHO report.


https://www.businessinsider.com/working-long-hours-linked-to-745000-deaths-a-year-who-2021-5

......

 

[silver gurl]

The average work week here is 38 hrs. In the Summer, most companies offer half day Fridays.
Rule of thumb: 8 hours of work, 8 hours of personal time and 8 hours of sleep.